Abstract
In this paper, added mass and drag coefficients for typical subsea manifolds installation conditions are determined through experimental model tests. The forced oscillation test results show that the equipment has large drag coefficients in the low Keulegan-Carpenter (KC) region, which leads to higher damping. The results also show that the added mass increases with higher KC number values and is appreciably larger than those found in the literature for flat plates, even when extrapolated to a prism. With the experimentally obtained hydrodynamic coefficients, a series of analytical and numerical simulations are conducted for a typical installation operation for various sea states. The results show that the operational windows for subsea equipment installation are expanded when compared to the current conventional approach.
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